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[2] V. Pták: Rayon spectral, norme des itérés d'un opérateur et exposam critique. C.R. Acad. Sci. Paris 265 (1967), 257-269. MR 0220090

[3] V. Pták: Spectral radius, norms of iterates and the critical exponent. Lin. Alg. Appl. 1 (1968), 245-260. MR 0230744

[4] V. Pták: Isometric parts of operators and the critical exponent. Čas. pěst. mat. 101 (1976), 383-388. MR 0458214

[5] V. Pták: Universal estimates of the spectral radius. Proceedings of the semester on spectral theory, Banach Center Publ., vol. 8, (Spectral theory) (1982), 373-387. MR 0738301

[6] V. Pták: A lower bound for the spectral radius. Proceedings of the American Mathematical Society 80 (1980), 435-440. MR 0580999

[7] V. Pták: A maximum problem for matrices. Lin. Alg. Appl. 28 (1979), 193-204. MR 0549433

[8] V. Pták: Functions of operators and the spectral radius. († N. J. Young). Lin. Alg. Appl. 29 (1980), 357-392. MR 0562769

[9] D. Sarason: Generalized interpolation in H∞. Trans. Amer. Math. Soc. 127 (1967), 179-203. MR 0208383 | Zbl 0145.39303

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